Single-centre randomized controlled trial. CR patients are randomized to HT (n=45) or CT (n=45). Assessments are performed at baseline, 12 weeks and 1 year, consisting of maximal exercise testing with respiratory gas exchange analysis, assessment of PAEE, QoL (also at 6 months), patient satisfaction (at 12 weeks only) and health care costs (12 weeks, 6 months and 1 year) Study population: Low to moderate risk patients entering outpatient CR after an acute coronary syndrome or revascularization with internet access and PC at home.